Acetylene gas generator with constant pressure



Oct. 20, 1953 F. PASSERI ACEJTYLENE GAS GENERATOR WITH CONSTANT PRESSURE Filed March 6, 1950 JNVEN'TOR. Francesco Rwserv Patented Oct. 20, 1953 1 UNITED I OFFICE ACETYLENE GAS GENERATOR WITH CONSTANT PRESSURE Francesco Passeri, Buenos Aires, Argentina. 6

Application March 6, 1950, Serial No. 147,786

7 Claims.

The invention relates to an acetylene gas generator with constant pressure and which is based upon a certain mechanical combination of elements which enable getting a high production output of acetylene gas which is generated .and distributed at a constant pressure. The apparatus is furthermore of extraordinary safety in operation, due to a simple and novel construction which permits omitting the usual pressure gauge.

For better comprehension of the invention and the practical execution thereof drawings are added which show a preferred type of execution and wherein the shown figure represents a vertical sectional view through the generator in question.

The generator comprises the following elements: a cylindrical container I of strengthened sheet iron which has at the bottom thereof a convexity towards inside and at the upper part an edge 2 upon which a" fiexible packing 3 is fitted. A cover 4 has the shape shown in the drawing; the bottom 5 thereof is provided with a groove able to contain packing 3. Several orifices are provided in the bottom of cover 4 as shown at ZI and 22. The upper part of the cover is provided with a cavity 6 wherein fits a clamping element 1 which is united to screw 8. An air; tight closure of cover 4 upon container I is obtained by turning screw 8 which screws into a yoke 9 which by means of pins [0 is secured to container I. The turning operation is made easy by wings I l. Cover 4 thus compresses the elastic packing 3 and guarantees airtightness.

Cover 4 furthermore will be provided with a safety valve I2 and a discharge cock I3.

To the bottom of cover 4 a cup-shaped casing I4 will be fixed so as to form an integral part therewith. It will serve as a counter-pressure chamber. Said casing I4 is maintained rigidly by element I5. Bottom I6 of casing I4 is open.

Upon casing I4 a basket I1 is provided which will contain calcium carbide.

Operation of the apparatus is as follows:

After filling container I about half with water and after putting the necessary charge of calcium carbide into basket I1, cover 4 is put upon container I and closed by screwing down screw 8.

The calcium carbide which contacts with water will develop acetylene which accumulates at the upper part of container I and in cover 4 by passing through the orifices shown in the drawing at 2| and 22. While the pressure of the water contained in container I will increase, the level thereof will descend, as the water will pass into the interior of easing l4, compressing the air conpressure.

In the meantime the level of the water in con tainer I will continue falling and at a given' moment contact with the calcium carbide will cease, terminating thus the generation of acetylene. 4

When acetylene is drawn off through cock I3, then the acetylene gas pressure within container I will diminish and the counter-pressure within casing M will act and try to form again an equilibrium, expelling therefrom the water which entered and increasing thus the level of the water in container I which again will form contact with the calcium carbide contained in basket ll. The higher the delivery of acetylene through cock l3 the higher will be the water level in container I and therefore the contact of the water with the calcium carbide, determining thus a constant pressure until total consumption of the calcium carbide contained in basket I1. I

Having described one embodiment of the-in vention, it is obvious that the same is not to' be restricted theretmbut is broad enough to cover all structures coming within the scope of the annexed claims. I 7

1. An acetylene generator comprising, an outer casing, a cover mounted on said casing, said cover comprising spaced upper and lower surfaces forming a chamber between them, a vertical post depending from the lower surface of said cover, an inner casing having a closed top and side walls and a completely open bottom mounted on the lower end of said post, a carbide basket mounted on the post above the inner casing. the lower surface of the cover having holes adapted to permit the passage of gas therethrough, a gas outlet cock and a relief valve mounted on the upper surface of the cover, a yoke attached to the outer casing, a screw cooperating with said yoke to hold the cover in pressure-tight engagement with said outer casing, and a recess in the upper surface of the cover adapted to receive the stem of said screw.

2. An acetylene generator comprising, an outer gas-containing chamber, a cover closing said chamber, means for holding said cover in closed position on said chamber, said cover having a hollow interior and having openings establishing communication between said hollow interior and the interior of the outer chamber, means on the cover for supporting a cup-shaped casing within the outer chamber, said casing having an open bottom, a carbide receptacle supported within the casing having an open bottom facing the lower end of the outer casing supported on the post within the outer casing, a carbide basket mounted on the post above the inner casing and below the bottom of the cover, and a gas outlet cock and relief valve mounted in the top portion of the cover and in communication with the hollow interior of thesa'me.

4. An acety1ene generator comprising. an outer closed, at the top by a hollow cover, the bottom of said cover having openings establishcommunication between the interior of the outer casing and the interior of the cover, the top of the cover being provided with a gas outlet cock anda relief valve, an inner casing closed at the top and open atthe bottom arranged within the outer casingbelow the cover thereof, and a carbide basket mounted in the, outer casing above the inner casing and below the bottom of the cover,

5, An acetylene generator as provided for in. claim 4, including a yoke-shaped member fitted across the top of the cover on the outside of the same, and screw means threadable through said yoke shaped member and operative against the top of the cover to thereby hold the cover seated in closed position on the top of the outer casing,

6. An acetylene generator comprising. an outer casing, acover mounted at the top of said casing. said cover comprising spaced upp r and lower surfaces forming a chamber between them, a vertical post depending from the lower surface of the cover and extending downwardly within the outer casing, an inner casing having a closed top and side walls and a completely open bottom mounted on the lower end of the post and having its open bottom located adjacent to the bottom of the outer casing, a carbide basket mounted on the post above the top of the inner casing and below the lower surface of the cover, the lower surface of the cover having a plurality of small holes adapted to permit the passage of gas therethrough to reach the interior of the cover, a gas outlet cock and a relief valve mounted on the upper surface of the cover and being in communication with the interior of the cover, a yoke attached'to theouter casing and disposed across the top of the cover, a screw cooperating with said yoke to hold the cover in pressure-tight engag'ement with said outer casing, and a recess in theupper surface of the cover adapted to receive the stem of said screw.

7: An acetylene generator comprising, an outer casing provided with an open top, a cover fitted on said top and closing the same, said cover cor'nprising spaced upper and lower surfaces forming a chamber between them, a vertical post attached to the lower surface of the cover and extending downwardly therefrom and within and centrally of the outer casing, an inner casing in the form of an open-bottom cup attached at its top to the lower portion of the post, said inner casing having its open bottom facing the bottom of the outer casing, 'a carbide basket attached centrally on the post above the inner casing, the lower surface of the cover being provided with holes to permit the vpassage of gas from the interior of the outer casing to the interior of said cover, a gas outlet cock and a relief valve mounted in the upper surface of the cover, and means operative on top of the cover for urging the same into seated and closed position on the top of the outer casing FRANCESCO PASSERI.

References Cited in the file of this P nt FOREIGN PATENTS Number Coun y Date 252,089 Italy Feb. 21, 1947 538,516 reat Britfn Aug 7, 1941 

2. AN ACETYLENE GENERATOR COMPRISING, AN OUTER GAS-CONTAINING CHAMBER, A COVER CLOSING SAID CHAMBER, MEANS FOR HOLDING SAID COVER IN CLOSED POSITION ON SAID CHAMBER, SAID COVER HAVING A HOLLOW INTERIOR AND HAVING OPENINGS ESTABLISHING COMMUNICATION BETWEEN SAID HOLLOW INTERIOR AND THE INTERIOR OF THE OUTER CHAMBER, MEANS ON THE COVER FOR SUPPORTING A CUP-SHAPED CASING WITHIN 